JingsongLi commented on a change in pull request #13937: URL: https://github.com/apache/flink/pull/13937#discussion_r519097384
########## File path: flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/connectors/hive/read/HiveCompactReader.java ########## @@ -0,0 +1,147 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.flink.connectors.hive.read; + +import org.apache.flink.connector.file.src.reader.BulkFormat; +import org.apache.flink.connectors.hive.HiveTablePartition; +import org.apache.flink.connectors.hive.JobConfWrapper; +import org.apache.flink.core.fs.FileSystem; +import org.apache.flink.core.fs.Path; +import org.apache.flink.table.catalog.CatalogTable; +import org.apache.flink.table.catalog.hive.client.HiveShim; +import org.apache.flink.table.catalog.hive.client.HiveShimLoader; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.filesystem.stream.compact.CompactBulkReader; +import org.apache.flink.table.filesystem.stream.compact.CompactContext; +import org.apache.flink.table.filesystem.stream.compact.CompactReader; +import org.apache.flink.table.types.DataType; +import org.apache.flink.table.types.logical.RowType; + +import org.apache.hadoop.hive.metastore.api.StorageDescriptor; +import org.apache.hadoop.mapred.JobConf; + +import java.io.IOException; +import java.util.HashMap; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; +import java.util.Properties; + +import static org.apache.flink.connectors.hive.util.HivePartitionUtils.restorePartitionValueFromType; +import static org.apache.flink.table.utils.PartitionPathUtils.extractPartitionSpecFromPath; + +/** + * The {@link CompactReader} to delegate hive bulk format. + */ +public class HiveCompactReader extends CompactBulkReader<RowData> { + + private HiveCompactReader(BulkFormat.Reader<RowData> reader) throws IOException { + super(reader); + } + + public static CompactReader.Factory<RowData> factory( + StorageDescriptor sd, + Properties properties, + JobConf jobConf, + CatalogTable catalogTable, + String hiveVersion, + RowType producedRowType, + boolean useMapRedReader) { + return new Factory( + sd, + properties, + new JobConfWrapper(jobConf), + catalogTable.getPartitionKeys(), + catalogTable.getSchema().getFieldNames(), + catalogTable.getSchema().getFieldDataTypes(), + hiveVersion, + producedRowType, + useMapRedReader); + } + + /** + * Factory to create {@link HiveCompactReader}. + */ + private static class Factory implements CompactReader.Factory<RowData> { + + private static final long serialVersionUID = 1L; + + private final StorageDescriptor sd; + private final Properties properties; + private final JobConfWrapper jobConfWrapper; + private final List<String> partitionKeys; + private final String[] fieldNames; + private final DataType[] fieldTypes; + private final String hiveVersion; + private final HiveShim shim; + private final RowType producedRowType; + private final boolean useMapRedReader; + + private Factory( + StorageDescriptor sd, + Properties properties, + JobConfWrapper jobConfWrapper, + List<String> partitionKeys, + String[] fieldNames, + DataType[] fieldTypes, + String hiveVersion, + RowType producedRowType, + boolean useMapRedReader) { + this.sd = sd; + this.properties = properties; + this.jobConfWrapper = jobConfWrapper; + this.partitionKeys = partitionKeys; + this.fieldNames = fieldNames; + this.fieldTypes = fieldTypes; + this.hiveVersion = hiveVersion; + this.shim = HiveShimLoader.loadHiveShim(hiveVersion); + this.producedRowType = producedRowType; + this.useMapRedReader = useMapRedReader; + } + + @Override + public CompactReader<RowData> create(CompactContext context) throws IOException { + HiveSourceSplit split = createSplit(context.getPath(), context.getFileSystem()); + HiveBulkFormatAdapter format = new HiveBulkFormatAdapter( + jobConfWrapper, partitionKeys, fieldNames, fieldTypes, hiveVersion, producedRowType, useMapRedReader); + BulkFormat.Reader<RowData> reader = format.createReader(context.getConfig(), split); + return new HiveCompactReader(reader); + } + + private HiveSourceSplit createSplit(Path path, FileSystem fs) throws IOException { + long len = fs.getFileStatus(path).getLen(); + return new HiveSourceSplit("id", path, 0, len, new String[0], null, createPartition(path)); + } + + private HiveTablePartition createPartition(Path path) { + Map<String, Object> partitionSpec = new LinkedHashMap<>(); + Map<String, DataType> nameToTypes = new HashMap<>(); + for (int i = 0; i < fieldNames.length; i++) { + nameToTypes.put(fieldNames[i], fieldTypes[i]); + } + for (Map.Entry<String, String> entry : extractPartitionSpecFromPath(path).entrySet()) { Review comment: https://issues.apache.org/jira/browse/FLINK-20040 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
